annual_mean#

annual_mean(data, tstart, tend, time_axis=0)[source]#

Compute annual means for daily, contiguous data in [tstart, tend] (inclusive).

Partial first or last years are averaged over the available days.

Parameters:

  • data (np.ndarray) – Input array. One axis is time (daily).

  • tstart (datetime.datetime) – Inclusive range of the data.

  • tend (datetime.datetime) – Inclusive range of the data.

  • time_axis (int) – Axis that represents time in data.

Returns:

  • yearly (np.ndarray) – Annual means with time axis replaced by number of years.

  • year_labels (np.ndarray of datetime64[Y]) – Year labels for each output slice.